When cop killer Christopher Dorner was on the loose and terrorizing southern California, some 30 groups joined together to put a $1 million price on his head. But after the former LAPD officer killed himself while barricaded in a mountain cabin in February, some of those groups have gotten stingy.

A law enforcement union became the latest of the contributors to voice second thoughts about its $60,000 share of the reward, following a similar decision by the city of Riverside to withdraw its pledge of $100,000. With Dorner dead and no shortage of prospective claims to the pot, it seems some of the groups behind the reward have developed an appreciation for…